Custom made silicone sealing O-ring/clear silicone washer

A clear silicone washer should be inspected on both faces before it is fitted, since trapped particles or small cuts can be difficult to notice through a transparent component. Its appearance does not establish the formulation or suitability for a particular contact. Select the finished washer for the actual medium, temperature, and cleaning conditions of its joint.

Match the inner diameter, outer support, and thickness to the mating faces. A silicone O-ring uses a different round section and should be identified separately. Keep the washer fully supported where closing force is applied.

Place the part flat and centered on clean surfaces. Avoid dragging it with rotating hardware and inspect for an edge pushed into the opening. During service, compare wear with the supporting face before replacement. Preserve the intended dimensions and material rather than selecting another clear ring solely because it looks similar, since a different section can change the compression and locating condition within the same joint.

Material options

Silicone. Custom formulation and color for the intended contact conditions.

Hardness selection

Silicone: 20–80 Shore A. Keep the washer fully supported where closing force is applied.

Custom dimensions

Match the inner diameter, outer support, and thickness to the mating faces.

Fit & assembly

Place the part flat and centered on clean surfaces.

Use & inspection

During service, compare wear with the supporting face before replacement.

Photos illustrate structure or material only. A silicone O-ring uses a different round section and should be identified separately. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.